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Mike Williams wrote:
> Wasn't it jcamjr who wrote:
> >An interesting side thought has to do with the viability of an earth
> >type planet in orbit of a red dwarf for the planet to recieve
enough
> >energy for water to remain in a liquid state it would have to orbit
so
> >close to its star as to be tidaly locked with one side to the star
and
> >the other always in darkness this would be a poor place to hope to
find
> >a viable biosphere However what if instead this world was in fact a
> >moon in orbit of a giant planet within the stars lifezone? this
would
> >seem to solve the tidal lock problem. Someone tell me what I'm
missing
> >here Im sure theres something wrong with this scenerio
>
> I don't see any problem with life on a world tidally locked to a
star.
>
> The big problem with life around a red dwarf, however, is that the
> habitable zone is very narrow. As the brightness of the star evolves,
> the habitable zone moves closer to or further from the star and the
> planet is left in an uninhabitable region. The habitable zone of our
Sun
> is wide enough that the Earth has remained inside the habitable zone
> despite moderate changes in solar brightness.
True, but aren't the changes in the brightness of red dwarves both
small and very, very slow (even in geological timeframes)?
-- Wakboth
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